Pre concentration online volatile organic compound monitoring system

Ontech730Pre concentration online volatile organic compound monitoring systemApplicable to the "2018 Key Area Environmental Air Volatile Organic Compounds Monitoring Plan" and the "2019 City level and above Environmental Air Volatile Organic Compounds Monitoring Plan". The sample gas is driven by a sampling pump and enters through the sampling manifold. After water and dust removal treatment, it enters the online pre concentration system through the sampling manifold and is quickly desorbed at high temperature before entering the dedicated chromatograph for analysis. The software monitoring and management platform automatically performs statistical analysis on the analysis results and uploads the data to the environmental monitoring station.

Ozone precursor monitoring system

For the analysis of ozone precursors, traditional chromatographic columns can separate up to57 target substances require a long time, and the Antech ozone precursor analysis system uses D-Swafer center cutting technology to distribute the target analytes to two chromatographic columns for separation. The purpose of optimizing chromatographic methods is to achieve excellent separation of all ozone precursor components on the chromatographic column in less than 1 hour. Using this scheme, the components resolved from the cold trap are first transferred to the BP-1 capillary chromatography column. The high volatility and low-carbon components that flow out first do not have ideal separation effects on this column. These high volatility components will enter the alumina PLOT chromatography column for further separation and then enter the first FID detector after separation. The high carbon components that flow out late in the BP-1 capillary column can be effectively separated on the BP-1 column, and then the valve is cut to enter an uncoated section to activate the capillary column and reach the second FID detector. Thus achieving rapid separation and detection of 57 target substances.

Secondary cold trap sampling system

Product Features:

Electronic refrigeration for water removal, no need for liquid nitrogen or dry ice, suitable for outdoor fixed-point monitoring

◎ Optional Nafion drying for water removal, effectively removing interference from moisture on analysis

Accurate electronic flow control effectively ensures the accuracy and reproducibility of results

◎ Secondary diversion setting, capable of measuring a wide range of concentrations

Sampling system:

◎ Ontech 100 series sampling manifold and insulation pipeline

◎ Cabinet (regular)

On-line Gas Chromatograph

◎ Ontech ozone precursor specific gas chromatograph

◎ Ontech dedicated workstation software

Preprocessing system

Ontech720 online two-stage cold trap concentrator

gas source

◎ Hydrogen generator

◎ Zero gas generator (integrated air compressor)

System control unit and data processing

◎ Industrial computer analysis control unit

◎ Data collection and transmission unit

◎ Electronic control and analog signal conversion module

Auxiliary monitoring

◎ Ontech 120 series meteorological five parameters

Calibration system (optional)◎ Ontech 850 standard gas diluter/high-precision dynamic diluter

◎ PAMS standard gas

◎ Nitrogen N2

Ontech730Pre concentration online volatile organic compound monitoring systemScope of Application

◎ Automatic monitoring of VOCs in the ambient air of industrial parks

◎ Automatic monitoring of VOCs in factory environment air

◎ Automatic monitoring of occupational air pollution

Analysis of VOCs sources in ambient air

◎ PAMS component monitoring in chemical industrial parks